At its core, Docker Containers are tiny virtual computers serialized to disk in a standardized format. So let's start with the 101 - what is Docker and why you want to use it. So, if you're using a different platform you might have to tweak which files get retained in your final container. You can set that up locally with this command: yarn create next-app -example blog-starter-typescript blog-starter-typescript-appĪs a side note, the tips and tricks in here are generic for all containerized Node apps, but the Dockerfiles themselves will only work as an untweaked copy-paste if you're using Next.js. To keep things replicable, I'm using the Next.js Blog-Starter-Typescript example in these instructions. If you want to follow along, you will need Docker Desktop and Yarn installed. Just give me a Dockerfile I can blindly copy paste.Starter Instructions - How to Dockerfile.Here's what I learned going through this process to deploy Tweet Sweep to fly.io - both the naive first steps for making a container work at all and then also some necessary optimizations for it. But let's say that you, like me at the start of last week, have never containerized a Node app before and need a crash course in how to do that? So let's say you've written an awesome app in Next.js and you want to deploy it to a nifty containerized platform like Digital Ocean or Fly.io.
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